Hoppers makes items jump when they dont fit in the hopper

Havent noticed this behavior are you sure its not jumping on a stair or half slab? Which is a different bug.

Watch my video on automatic tileable sorting machine:
http://www.youtube.com/watch?v=itzlwHLtCbc
Its a great machine... But if a hopper has like cobble in it and dirt tries to go in. It checks in like 1 tick and if it ain't fitting in there it litterally JUMPS up and keeps the velocity it was going in. Wich may screw it up becus the next hopper maybe have the right item in where it fits in. But then it jumps over it because of that. Hope you understand

at which time mark can i find it?

What do you mean?

That happens because the hopper has a composite hitbox. The item tries to fall on the carved middle, but can't occupy that space due to the new item ejection code so it jumps. Similar behavior can be seen with the lower step of a stair block.

Yeah well this behaviour makes it impossible to have a 100% reliable tileable item sorting machine D: So mojang please improve our abilities and remove that hitbox thing

For now you can use detours and space between the hoppers. Are you using water to transport the items?

Yeah but i finally got a proper way of tiling the sorters as i shown in my video... but because of this behaviour it aint possible to get that working 100 percent

Confirmed in 13w02b.

Thanks Tails 🙂

I think thats why its called a "Hopper"

That's nonsense... It makes every thing really unreliable. So it shouldn't be intented behaviour.

😉 I do agree with you though and I did add my vote...

It's annoying as hell! please PLEASE fix

Annoying indeed, but it probably works as intended. One weird thing I have noticed though, is that xp also bounces when it is on a hopper.

This is a regression for items getting stuck inside transparent blocks, when items are inside those, they fly out, and when items are on top, they bounce, even if nothing occupies the way for the item to fall into the hopper, you can occasionally see the item bouncing away from the hopper before disappearing.

Appears worse in 13w09c than before. My sorter is missing huge amounts of items now, compared to the previous snapshots.

If you want a stable item sorter, It's way easier now. You don't have to use water, just use hoppers instead of water. Just search for it on youtube/google

https://docs.google.com/file/d/0B3H6-TZ2sGreeE1UUy1pRUFsSW8/edit
Made one 😛
go to link, click file -> download
It also furnaces things for you

I have a lavablade-and-player-attack mob grinder with a hopper collecting the loot, and it keeps making the experience orbs bounce up into the lava. I think at least 2/3 of the experience is getting lost this way.

Resolving to MC-1720.